Police are investigating a community health worker in Kakamega who is accused of administering birth control on four primary school pupils.
The girls said they were lured by the health worker who asked them to have the implants inserted on their arms.
The girls, who are aged between 14 and 16, said they were approached by the health worker who promised to give them free pads if they accompanied her to Musanda Health Centre in Lurambi.
When they got to health facility, the girls said they were taken through a guidance and counselling session by a nurse before the implants were inserted on their arms.
"We were told that this is a contraceptive that will protect us from getting pregnant for three years. We did not receive the pads we had been promised," said one of the girls.
She said when she got home, her arm got painful and started swelling. She then opened up and told her mother what had happened.
The parents of the girls have urged the police to arrest the health worker for putting the lives of their daughters at risk.
"We are shocked by what happened and do not know what intentions the community health worker had. Police need to investigate the incident and take action against the volunteer, " said one of the parents.
Western Region police commander Peris Kimani said the incident is being investigated. She said the girls recorded statements at the police station
"We are yet to make any arrest but investigations are underway," said Ms Kimani.
Kakamega Gender Advisor Peninah Mukabane described the incident as shocking.
"What the community health worker did is unthinkable. We have recommended that disciplinary action be taken against her," said Ms Mukabane.